Hoffmann, Professor, 1839-1919 · London : Frederick Warne · leaf 134
elaboratepatterns depicted on pp. 78, 79. Beginning with Fig. 105, we note in the first place that itis a rectangular parallelogram, consisting of two equalsquares. We know that the two large triangles a a con-stitute one half of our available material, and that they canbe made to form a square… … Fig. 224. To form Fig. 106, we retain the square last formed byway of centre, remove the outer large triangle from the left-hand side, and transfer it, the reverse way up, to the oppositeside. (See Fig. 224.) Again removing the triangle last placedin position, and transferring it (see Fig. 225) to…
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